Home / 421,267.44-631,901.20-140,784.68

Finding the Fourth Proportional to 421,267.44, 631,901.20 and 140,784.68

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Solution

The fourth proportional to 421,267.44, 631,901.20 and 140,784.68 is: 211,177.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,267.44 : 631,901.20 = 140,784.68 : x
  2. Step 2: Convert to fraction form
    421,267.44/631,901.20 = 140,784.68/x
  3. Step 3: Cross multiply
    421,267.44x = 631,901.20 × 140,784.68
  4. Step 4: Simplify right side
    421,267.44x = 88,962,008,233.62
  5. Step 5: Solve for x
    x = 88,962,008,233.62/421,267.44
  6. Step 6: Final answer
    x = 211,177.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.